Hat bill



FIG. 1 is a rear perspective view of a hat bill showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The phantom line portions of the above figures of the drawing are for illustrative purposes only and do not form part of the design claimed herein. 

The ornamental design for a hat bill, as shown and described. 